Improved crushing and q-rindino-machine



J. W. BUTTER. GRUSHING AND GRINDING MACHINE.

No. 88,216. Patented Mar. 23, 18 69.

fiuiml' time JAMES W. BUTTER, OF ST.-LOU1S, MISSOURI.

Letters Patent No. 88,216, dated Mar 23,-1869.

IMPROVED CRUSHINTG' AND GRINDHG-MACHIICBQ m ichodule referred to in.these Le ters Patent pnd making put 0': the lam .To all whom it macimerrt:

Be it known that I, J AMES W. BUTTER, of St. Louis, in the county of St.Louis, and State of Missouri, have invented a; new and improved Crushingand Grinding- Machine; and I do hereby declare that the following is afull, clear, and-exact description of the same, reference being had tothe accompanying drawing, forming a part of this specification, and inwhich- Figure 1 represents a sectional elevation of a crushing andgrinding-machine, constructed according to my improvement; and' Figure 2represents a horizontal section of the same, taken through the line a:a: in fig. 1.

Similar letters of reference indicate corresponding parts in bothfigures.

This invention relates to that class of crushing and grinding-machinesin whicli'a conical grinder, or crusher, with concentric and eccentricbearings, is operated within a stationary upright cylinder, or chamber,or in which the crushing-chamber ismade conical and the crusherstraight; and the invention consists in the combination, with suchcrusher and its cylinder, or chamber, of a gauge-ring of novelcharacter, whereby ore or other material'to be crushed, or ground, whenplaced within -the cylinder, is checked in its descent, and preventedties, and arranged in a vertical position, resting upon.

a horizontal base, I).

.B is-a crusher and grinder, of conical, or tapering form,' and securedto an oscillating arbor D, suspended from-the cap of the cylinder, bymeans of a universal hall-'and socket joint, E, and is made to swing ina circular orbit, around the axis of the cylinder, by the rotating -of.an -eccentric-box, a, carrying the lower extremityof the arbor D, andfitted in the hub of a horizontal spur-wheel, G, arranged under thebase-plate b, and driven by a pinion, h, of a suitably-arrangedcounter-shaft, H.

O is a gauge-rin g, constructed of iron or other metal, and. preferablyof a form as represented in the drawing, but may be of any suitable formf r effecting the purpose for which it is designed.

Said gauge-ring G is carried upon the upper extremity of the hub of thesaid spur-wheel. G, with its upper surface fitting against the undersurface of the glilider B, and serves to prevent thedownward escape ofthe material, before it has been sufficiently reduced, but permits theready escape of said material after it has been suiiicicntiy rodiu-idbymeans of an annular space, 1:, left between its outer edge and the innersurface of the cylinder; and, as it turns with the .hub, it

also serves, to some extent, as a distributer, changing the position andlocality of=the lumps, or parables o the material at the bottom, andthus presenting new surfaces thereof to the action of the crusher.

Said gauge-ring Q is, or may be, provided' with a clearer, or stripperj. Said clearer, or stripper j, is constructcd of steel or othersuitable metal, and is so arranged as, by the rotating of saidgauge-ring O, to scrape against the inner surface of the lower part ofthe cylinder A, immediately behind the point where the material is beingsubjected to the greatest crushing action of the grinder B, thereby to.scrape off, and to prevent the adhering of the material to the saidsurface.

This stripper, or clearer, is unnecessary, except in grinding suchmaterial as is liable to adhere to the cylinder, when in a crushed orpowdered state.

Suitable openings a. are made in thecap, for insertion of the materialto be crushed, or ground; and also similar openings 0 o are made throughthe base-plate b, and gearing-wheel G, for the downward passage of thesaid material, after it has been crushed and ground.

Motion is imparted to the shaftH by any suitable application of power,and the material fed in at the top gradually works its way downward, byaction of gravity, as in other vertical crushers, or grinding-machines.

It will be evident, that if a piece of ore, or a rock, or othermaterial, be placedin the cylinder, while the crusher B is' in theposition indicated by the red lines, it will, by the motion of saidcrusher, be subjected to a crushing and grinding-force, and will be moreor less reduced, according to the locality it occupies in the cylinder.If near the top, as at K, it will be broken into two or more pieces; butif it be small enough to lie near'the bottom, as at K, it will bereduced to gravel or to powder, its fineness depending upon theadjustment at which the eccentric-box c and gauge-ring O are set.

In the arrangement represented-in the drawing, the crusher B does notrotate upon its axis, but in some cases may be made to do so. The ore orother mate rial descends, as its lumps, or particles are reduced, untilit reaches the face of the gauge-ling 0, where it is checked in itsdownward motion, and moved round with the said gauge-ring by thefriction of its surface, until said lumps, or particles, by beingsubjected to the repeated crushing and grinding-action of the crusher,become sufficiently reduced to drop through the annular space 0.

The crnshing-chaniberA need not necessarily be of cylindrical form onits inside, but of polygonal or varied configuration, and may bemadetapering, or conical, instead of the crusher B, which may be madestraight.

- Difiercnt constructions, also, maybe adopted for feed and delivery ofthe material to and from the ini1l, 'or machine:

Also, additional; grindin g-surfaces, or plates, if necessnry, may bearranged below. the crusher, for further reducing, material.

A mill, or machine constructed upon this principle,

or. finely powdering the crushed and ground is applicable to crushingand grinding substances of various kinds, both coarse and fine,including-rock, ore, grain, and so forth.

What I claim as my invention, and desire to'harve "secured by LettersPatent, is-

1. The gauge-ring 0, arranged and operating in com- AS. BUTTER.Witnesses:

I. S. PIERCE, G. W. Forums.

